
import { useConfigStore } from '@/store/modules/config.js'  // store

const watermark = (settings) => {
    const configStoreData = useConfigStore()

    let waterMarkerConfig = configStoreData.configList.filter(item => item.configKey === 'sys.waterMarker')[0]

    if (waterMarkerConfig && waterMarkerConfig.configValue === 'false') {
        return
    }

    let maskDivList = document.querySelectorAll('.mask_div')

    maskDivList.forEach(item => {
        item.remove()
    })

    // 默认设置
    const defaultSettings = {
        watermark_txt: "text",
        watermark_align: "left",
        watermark_x: 20, //水印起始位置x轴坐标
        watermark_y: 20, //水印起始位置Y轴坐标
        watermark_rows: 20, //水印行数
        watermark_cols: 20, //水印列数
        watermark_x_space: 70, //水印x轴间隔
        watermark_y_space: 50, //水印y轴间隔
        watermark_color: '#aaa', //水印字体颜色
        watermark_alpha: 0.4, //水印透明度
        watermark_fontsize: '15px', //水印字体大小
        watermark_font: '微软雅黑', //水印字体
        watermark_width: 210, //水印宽度
        watermark_height: 80, //水印长度
        watermark_angle: 30 //水印倾斜度数
    };

    if (settings && typeof settings === "object") {
        for (let key in settings) {
            if (settings[key] && defaultSettings[key] && settings[key] === defaultSettings[key]) {
                continue
            } else if (settings[key]) {
                defaultSettings[key] = settings[key];
            }
        }
    }

    let watermarker_wrap = document.createElement("div");
    watermarker_wrap.style.position = "fixed";
    watermarker_wrap.style.top = "0";
    watermarker_wrap.style.left = "0";
    watermarker_wrap.style.width = "100%";
    watermarker_wrap.style.height = "100%";
    watermarker_wrap.style.zIndex = "999999";
    watermarker_wrap.style.pointerEvents = 'none';
    document.body.appendChild(watermarker_wrap);

    let oTemp = document.createDocumentFragment();
    //获取页面最大宽度
    let page_width = Math.max(document.body.scrollWidth, document.body.clientWidth);
    let cutWidth = page_width * 0.0150;
    page_width = page_width - cutWidth;
    //获取页面最大高度
    // let page_height = Math.max(document.body.scrollHeight, document.body.clientHeight) + 450;
    let page_height = Math.max(document.body.scrollHeight, document.body.offsetHeight, document.documentElement.clientHeight, document.documentElement.scrollHeight, document.documentElement.offsetHeight) + 450
    page_height = Math.max(page_height, window.innerHeight - 30);

    // console.log(page_height)

    //如果将水印列数设置为0，或水印列数设置过大，超过页面最大宽度，则重新计算水印列数和水印x轴间隔
    if (defaultSettings.watermark_cols == 0 || (parseInt(defaultSettings.watermark_x + defaultSettings.watermark_width * defaultSettings.watermark_cols + defaultSettings.watermark_x_space * (defaultSettings.watermark_cols - 1)) > page_width)) {
        defaultSettings.watermark_cols = parseInt((page_width - defaultSettings.watermark_x + defaultSettings.watermark_x_space) / (defaultSettings.watermark_width + defaultSettings.watermark_x_space));
        defaultSettings.watermark_x_space = parseInt((page_width - defaultSettings.watermark_x - defaultSettings.watermark_width * defaultSettings.watermark_cols) / (defaultSettings.watermark_cols - 1));
    }
    //如果将水印行数设置为0，或水印行数设置过大，超过页面最大长度，则重新计算水印行数和水印y轴间隔
    if (defaultSettings.watermark_rows == 0 || (parseInt(defaultSettings.watermark_y + defaultSettings.watermark_height * defaultSettings.watermark_rows + defaultSettings.watermark_y_space * (defaultSettings.watermark_rows - 1)) > page_height)) {
        defaultSettings.watermark_rows = parseInt((defaultSettings.watermark_y_space + page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space));
        defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1));
    }
    let x;
    let y;
    for (let i = 0; i < 6; i++) {
        y = (defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i) + 70;
        for (let j = 0; j < defaultSettings.watermark_cols; j++) {
            x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j;
            let mask_div = document.createElement('div');
            mask_div.id = 'mask_div' + i + j;
            mask_div.className = 'mask_div';
            mask_div.innerHTML = defaultSettings.watermark_txt;
            // mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt));
            //设置水印div倾斜显示
            mask_div.style.webkitTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.MozTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.msTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.OTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.transform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.visibility = "";
            mask_div.style.position = "absolute";
            mask_div.style.left = x + 'px';
            mask_div.style.top = y + 'px';
            mask_div.style.overflow = "hidden";
            mask_div.style.zIndex = "9999";
            //让水印不遮挡页面的点击事件
            mask_div.style.pointerEvents = 'none';
            mask_div.style.opacity = defaultSettings.watermark_alpha;
            mask_div.style.fontSize = defaultSettings.watermark_fontsize;
            mask_div.style.fontFamily = defaultSettings.watermark_font;
            mask_div.style.color = defaultSettings.watermark_color;
            mask_div.style.textAlign = defaultSettings.watermark_align;
            mask_div.style.lineHeight = '22px';
            mask_div.style.width = defaultSettings.watermark_width + 'px';
            mask_div.style.height = defaultSettings.watermark_height + 'px';
            mask_div.style.display = "block";
            oTemp.appendChild(mask_div);
        };
    };
    // document.body.appendChild(oTemp);
    watermarker_wrap.appendChild(oTemp);
}

export default watermark;